Calliope gGmbH
Raumerstrasse 11
10437 Berlin

Represented by its managing directors
Jørn Alraun, Klaus J. Buß

Register court: Amts­ge­richt Berlin-Charlottenburg
Re­gis­ter-Nr.: HRB 181793
USt-Ident-Nr.: DE310290094
WEEE-Reg-Nr.: DE 31872208

Responsible for the content according to § 55 Abs. 2 RfStV:
Klaus J. Buß (same address as above)

The content of our website has been compiled with meticulous care and to the best of our knowledge. However, we cannot assume any liability for the up-to-dateness, completeness or accuracy of any of the pages.

Pursuant to section 7, para. 1 of the TMG (Telemediengesetz – Tele Media Act by German law), we as service providers are liable for our own content on these pages in accordance with general laws. However, pursuant to sections 8 to 10 of the TMG, we as service providers are not under obligation to monitor external information provided or stored on our website. Once we have become aware of a specific infringement of the law, we will immediately remove the content in question. Any liability concerning this matter can only be assumed from the point in time at which the infringement becomes known to us.

Limitation of liability for external links

Our website contains links to the websites of third parties (“external links”). As the content of these websites is not under our control, we cannot assume any liability for such external content. In all cases, the provider of information of the linked websites is liable for the content and accuracy of the information provided. At the point in time when the links were placed, no infringements of the law were recognisable to us. As soon as an infringement of the law becomes known to us, we will immediately remove the link in question.

Images: Calliope gGmbH, Jan Kraus, BMWi Maurice Weiß.

Data protection

A visit to our website can result in the storage on our server of information about the access (date, time, page accessed). This does not represent any analysis of personal data (e.g., name, address or e-mail address). If personal data are collected, this only occurs – to the extent possible – with the prior consent of the user of the website. Any forwarding of the data to third parties without the express consent of the user shall not take place.

We would like to expressly point out that the transmission of data via the Internet (e.g., by e-mail) can offer security vulnerabilities. It is therefore impossible to safeguard the data completely against access by third parties. We cannot assume any liability for damages arising as a result of such security vulnerabilities.

The use by third parties of all published contact details for the purpose of advertising is expressly excluded. We reserve the right to take legal steps in the case of the unsolicited sending of advertising information; e.g., by means of spam mail.

This site uses Google Analytics

This website uses Google Analytics, a web analytics service provided by Google, Inc. ("Google"). Google Analytics uses "cookies", which are text files placed on your computer to help the website analyse how visitors use the site. The information generated by the cookie about your use of the website (including your IP address) will be transmitted to and stored by Google on servers in the United States . Google will use this information for the purpose of evaluating your use of the website, compiling reports on website activity for website operators and providing other services relating to website activity and internet usage. Google may also transfer this information to third parties where required to do so by law, or where such third parties process the information on Google's behalf. Google will not associate your IP address with any other data held by Google. You may refuse the use of cookies by selecting the appropriate settings on your browser, however please note that if you do this you may not be able to use the full functionality of this website. By using this website, you consent to the processing of data about you by Google in the manner and for the purposes set out above.

You can prevent Google’s collection and use of data (cookies and IP address) by downloading and installing the browser plug-in available under

Please note that this website initializes Google Analytics with the setting
This guarantees anonymized data collection by masking the last part of your IP address.
Further information concerning the terms and conditions of use and data privacy can be found at or at


The contents of this website and the associated pages have been compiled and implemented with meticulous care and to the best of our knowledge. However, errors can not be ruled out. Please send any information and corrections to one of the addresses listed here (contact). Liability for the accuracy, completeness and actuality of these websites can not be accepted. In particular, Calliope gGmbH assumes no liability whatsoever for possible damages or consequences arising from the direct or indirect use of the contents offered.
Calliope is a content provider for its own content only. Cross-references ("external links") from these own contents are to be distinguished from the contents held by other providers. These third-party contents have not been created by Calliope, nor is Calliope empowered to influence these contents. The content of external pages, to which Calliope refers by means of links, do not reflect the opinion of Calliopes, but serve merely for the information and the representation of connections. Calliope is not liable for third-party content, to which it merely refers in the above-mentioned sense. The responsibility lies solely with the respective content provider.